Improvement in book-backing machines



2 Sheets-Sheet 1.

J. E. COFFI N. BOOK-BACKING MACHINE.

Patented Dec.

INVEN TOR.

' WITNESSES.

N. PETERS, FHDTO-LITHOGRAFHER. WASHINGTON. D C:

Z Sheets-Sheet 2'. J. E. COFFIN.

BOOK-BACKING MACHINE. W No.171,366. Patented Dec. 21,1875.

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NJETERS, FHOTO LITHOGRAFHEIL WASHINGTON. RC.

UNITED STATES PATENT QFFICE.

JOHN E. COFFIN, OF MYSTIC RIVER, CONNECTICUT.

IMPROVEMENT-IN BOOK-BACKING MACHINES.

Specification forming part of Letters Patent No. 1 7 1,366, datedDecember 21, 1875; application filed.

September 8, 1875.

To all whom it may concern:

Be it known that 1, JOHN E. CoFFuv, of Mystic River, in the county ofNew London and State of Connecticut, have invented a new and usefulImprovement in Book-Backin g Machines; and I do hereby declare that thefollowing specification, taken in connection with the drawings making apart of the same, is a full, clear, and exact description thereof.

Figure 1 is a side view of the machine. Fig. 2 is a front view of thesame. Fig. 3 is a transverse section through the center of the machine,showing the roller and clamping device in section. Fig. 4 is a sideview, partly in section, the frame being removed to show the workingparts.

This invention consists in the application of mechanism to a book-backing machine, so that the machine may be driven by power and perform allthe functions automatically, without the severe manual labor nowrequired.

In the drawings, a is the main driving-wheel, by which power is appliedto the machine. I) is a clutch, operated through the levers 0, cl, and eby the lever f. The lever e hooks under a lip on the lever f. Thislever. f projects at the front of the machine, and is provided with afoot-tread, g. When this lever is depressed the lip bears upon one endof the lever e, and engages the clutch b with the wheel, thus settingthe machine in motion. The lever f is held, when depressed, by the hookh, secured to the supplemental lever c. When the operator places hisfoot on this supplemental lever the hook h is disengaged, and the leverf being released, the spiral spring relieves the clutch b from contactwith the driving-wheel, and the driving-wheel revolves without impartingmotion to the machine. The lever f, operated by the foot-treadle g, notonly throws the machine in and out of gear, but the lever 70 is alsoconnected with the same and with the knuckle-jointed levers I, so thatwhen the lever f is depressed the knuckle-jointed levers arestraightened, and thus force the jaws 0 and it together, and firmlysecure the book the back of which is to be rolled. The jaws o and it maybe adjusted to suit the thickness of the book by the wedge-shaped block1, which, by either raising or lowering the screw 4, changes thedistance between the blocks 2 and 3. The jaw n being secured by the barsm m to the block 2, and the block 3 by the knuckle-jointed levers l tothe jaw 0, it follows that, by increasing the distance between theblocks 2 and 3, the distance between the jaws will also beincreased.Thejaws may also be adjusted vertically by the wedges, secured to a barplaced under the bearing of the levers, to

which the jaws are secured, and which may be adjusted and'secured by thescrew, as is shown in Fig. 2, partly in solid and partly in brokenlines.

The pressure-roller p is mounted in a frame secured to the cheek-piecesq q, hinged by pins to the side frames of the machine. This press-- Iure-roller is pressed down onto the back. of the firmly and with greatpower onto the back of the book, while the oscillation of the framerolls the roller over the same.

The oscillation of the roller-frame and the forward and backward motionof the roller are produced by the crank c, secured to the end of theshaft 00, and connected with the arm 2, secured to the oscillatingrollerframe by the connecting-rod y, so that at each revolution of theshaft 00 the roller-frame makes one forward and backward oscillation.

Themain driving-shaft, to which the drivingwheel ais connected. .ordisconnected by the clutch b, is geared by a small pinion into thelargcrgear-whcel on the shaft carrying the cams u a, and another smallgear provided with a clutch is secured to the shaft 00, and also gearsinto the larger gear'wheel d. on one end of the shaft 00. The crank 11imparts the oscillating motion to the roller 19, as above described. Themale gear is loose on the shaft .70, and is connected with ordisconnected from the shaft by the clutch b, which is operated by theshifting-rod 0, having a projection on the same in contact with asegmental frame.

comes in contact with the segmental rib, and thus disengages the clutchb, when the rotation of the shaft 00 ceases, and consequently theoscillation of the pressure-roller 19.

Having thus described the different parts of my improved boolcbackingmachine, I will now describe the operation of the same. Either manual,steam, or other power being applied to the driving-wheel a, the samewill. revolve freely without imparting motion to the machine. The jawsbeing properly adjusted to retain the size of book the back of which isto be rolled, the operator places the book between the jaws, extendingthe same above the edges of the jaws a proper distance. He now placeshis foot on the treadle y, depressing the lever j, which forces the jawsfirmly together, and secures the book, while the clutch b also engageswith the drivingwheel, which now imparts its motion to the mechanism ofthe machine. The projection on the shiftingrod c at this time rests onthe segmental rib secured to the large gear d, and the clutch b is outof gear. The roller 19 does not roll over the back of the book, as theshaft 00 does not revolve, but the cam 10 revolves and depresses the armor lever t, and

' thus presses the roller p firmly against the back of the book. As soonasthe projection on the shifting-rod 0 leaves the segmental rib on thegear-wheel d the spiral spring forces the clutch 11 into gear, when theshaft 00 revolves, as also the crank 41, and thus imparts oscillatingmotion to the roller-frame, which rolls the roller forward and backwardover the clutch I), thus stopping the rotation of the shaft or and theoscillation of the roller- At the same moment the peculiar shape of thecam u allows the arm t to rise, and' thus raise the pressure-roller poff the book. The operator now places his foot on the treadle i, forcingthe hook h off the pin on the lever f, when the same is forced upward bythe spring, the clutch b becomes disengaged from the driving-wheel, andthe machine is stopped. The operator now removes the book, replaces thesame by another, places his foot on the treadle g, and forces down thelever f, when the whole operation will be repeated.

The only labor required by the operator is the insertion and removal ofthe book, and the depression and relieving of the lever f. When no poweris available, unskilled labor may be used to turn the driving-wheel, andthe skilled operator will be relieved from the severe labor required tomove the pressureroller forward and backward, which labor is moreserious, owing to the curve through which the roller-frame is moved,than would at first seem possible.

With my improved machine, even when turned by manual labor, a greatsaving in cost and time is effected, and a very much larger amount ofwork can be performed than is possible with the older hand machine.

' What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination of the driving-wheel, the clutch, and thebook-holding jaws with a foot-lever and intermediate mechanism, substantially as described, whereby the machine is started and the jawsclosed by one movement of the lever, and the reverse effect produced byits return movement, as set forth.

2. The combination, with the rollerp, mountedin a hinged frame forinducing downward pressure, of the crank 0, rod y, and arm z,substantially as described, whereby the roller is oscillated whilepressed downward on the back of the book, as set forth.

3. The combination, with the revolving cal to, of the arm t, crank s,and bar 1", connected with the cheek-piece q, constructed to operate soas to press the roller 19 against the bookback, substantially as and forthe purpose described.

4:. The combination, with the shifting-rod c, of the segmental ribsecured to the gear at, and the clutch b, arranged to operate togethersubstantially as and for the purpose described.

5. In combination with the adjustable jaws 0 and a, the oscillatingroller-frame secured to the cheek-pieces q q, and the automaticmechanism, substantially as described, by which the roller is pressedagainst the back of the book, as and for the purpose set forth.

6. In a bookbacking machine driven by power, the combination of thefollowing elements: a foot-lever, by which the jaws are forced together,and the machine is set in motion; a cam, operating a combination oflevers, by which the roller is forced against the back of the book heldin the jaws automatically; and a rotating crank with intermediatemechanism, by which oscillating motion is imparted to the roller-frame,the whole operating together substantially as and for the purposespecified.

' JOHN E. COFFIN. Witnesses:

LEMUEL GLIFT, L. W. Mossn, Jr.

